/*为了让本实例尽可能简洁的突出鼠标编程，而不在其他方面过多分散读者的注意力。我忽略了很多实现的细节，读者对于可以在十进制编辑框中输入字符"F"之类的问题不要太吃惊。有兴趣的读者可以很容易的修正这个"bug"*/
#include<dos.h>
#include<conio.h>
#include<string.h>
#include<math.h>
#include<stdlib.h>
#include<stdio.h>
#define HEX 0
#define DEC 1
#define OCT 2
#define BIN 3
int index=0,choice=0;
/*初始化鼠标器*/
void initmouse()
{
_AX=0;
geninterrupt(0x33);
}
/*显示鼠标光标*/
void showmouse()
{
_AX=1;
geninterrupt(0x33);
}
/*隐藏鼠标*/
void hidemouse()
{
_AX=2;
geninterrupt(0x33);
}
/*取鼠标状态和鼠标位置*/
void getmouse(int *button,int *x,int *y)
{
_AX=3;
_BX=0;
geninterrupt(0x33);
*button=_BL;
*x=_CX;
*y=_DX;
}
/*设置程序中的数字字符表*/
int getnum(char c)
{
int j;
char alpha_set[36]="0123456789abcdefghijklmnopqrstuvwzyz";
for(j=0;j<36;j++)
{
if(alpha_set[j]==c)
break;
}
return j;
}
/*把任意radix进制的数，转换为十进制数*/
unsigned long convert_to_decimal(char *_num,int radix)
{
int i,len;
unsigned long dec=0;
len=strlen(_num);
len--;
for(i=0;_num[i]!=NULL;i++,len--)
{
dec+=(getnum(_num[i])*pow(radix,len));
}
return dec;
}
/*在给定的坐标(x,y)的位置显示一个字符串*/
void display(int x,int y,char string[80])
{ gotoxy(x,y);
cprintf(string);
}
/*清屏，并且把背景色设置为青绿色*/
void make_screen_cyan()
{
textbackground(CYAN);
clrscr();
}
/*绘制程序的初始界面*/
void start_screen()
{
index=0;
hidemouse();
make_screen_cyan();
textbackground(RED);
textcolor(BLACK);
display(20,1,"Radix Converter by NILOY MONDAL.");
display(10,2,"Email:-yiwei@zju.edu.cn");
display(30,3,"Press Escape to Quit");
textbackground(CYAN);
display(10,5,"Hexadecimal:- ");
display(10,7,"Decimal :- ");
display(10,9,"Octal :- ");
display(10,11,"Binary :- ");
textbackground(BLUE);
display(23,5," ");
display(23,7," ");
display(23,9," ");
display(23,11," ");
if(choice==HEX)
gotoxy(24,5);
else if(choice==DEC)
gotoxy(24,7);
else if(choice==OCT)
gotoxy(24,9);
else if(choice==BIN)
gotoxy(24,11);
showmouse();
}
void main()
{
char text[80]="\0",buffer[80];
char ch,*charhex,*chardec,*charoct,*charbin;
int button,mousex,mousey,x,y;
unsigned long deci;
initmouse();
start_screen();
showmouse();
while(1)
{
if(kbhit())
{
ch=getch();
/*ESCAPE键的ASCII值是27，如果用户按下ESC，程序结束*/
if(ch==27)
break;
/*如果按删除键并且光标没有越过输入框的边界*/
if(ch=='\b'&&wherex()>=24)
{
/*把光标退后一格，并且放一个空格在那里*/
cprintf("\b");
cprintf("%c",255);
/*再把光标退后一格，弹出删除的字符*/
cprintf("\b");
if(index!=0)
index--;
text[index]=NULL;
}
else if(wherex()>=24&&ch>='0'&&ch<='f')
{
cprintf("%c",ch);
/*把字符放入字符数组*/
text[index]=ch;
/*把数组最后一位置零*/
text[index+1]=NULL;
index++;
}
/*保存当前的坐标*/
x=wherex(),y=wherey();
/*程序首先把字符串通过convert_to_decimal()转化为十进制数，之后调用stdlib.h定义的ltoa()把十进制数转换为其它进制数，比如二进制、八进制、十优进制等等.*/
switch(choice)
{
case HEX:
deci=convert_to_decimal(text,16);
gotoxy(24,7);
printf("%ld ",deci);
gotoxy(24,11);
printf("%s ",ltoa(deci,buffer,2));
gotoxy(24,9);
printf("%s ",ltoa(deci,buffer,8));
break;
case DEC:
deci=atol(text);
gotoxy(24,5);
printf("%s ",ltoa(deci,buffer,16));
gotoxy(24,9);
printf("%s ",ltoa(deci,buffer,8));
gotoxy(24,11);
printf("%s ",ltoa(deci,buffer,2));
break;
case OCT:
deci=convert_to_decimal(text,8);
gotoxy(24,7);
printf("%ld ",deci);
gotoxy(24,5);
printf("%s ",ltoa(deci,buffer,16));
gotoxy(24,11);
printf("%s ",ltoa(deci,buffer,2));
break;
case BIN:
deci=convert_to_decimal(text,2);
gotoxy(24,5);
printf("%s ",ltoa(deci,buffer,16));
gotoxy(24,7);
printf("%ld ",deci);
gotoxy(24,9);
printf("%s ",ltoa(deci,buffer,8));
break;
}
gotoxy(x,y);
}
getmouse(&button,&mousex,&mousey);
mousex++,mousey++;
/*下面的代码检测用户在什么地方按了什么按钮*/
if(mousex/8>23&&mousex/8<50&&mousey/16==2&&button&1==1)
{
choice=HEX;
start_screen();
}
else if(mousex/8>23&&mousex/8<50&&mousey/16==3&&button&1==1)